//
// MagicWandTool.cs
//
// Author:
//       Olivier Dufour <olivier.duff@gmail.com>
//
// Copyright (c) 2010 Olivier Dufour
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Collections.Generic;
using Gtk;
using Pinta.Core;

namespace Pinta.Tools;

public sealed class MagicWandTool : FloodTool
{
	private readonly IWorkspaceService workspace;

	private CombineMode combine_mode;

	public MagicWandTool (IServiceProvider services) : base (services)
	{
		workspace = services.GetService<IWorkspaceService> ();
		LimitToSelection = false;
	}

	public override Gdk.Key ShortcutKey => new (Gdk.Constants.KEY_S);
	public override string Name => Translations.GetString ("Magic Wand Select");
	public override string Icon => Pinta.Resources.Icons.ToolSelectMagicWand;
	public override string StatusBarText => Translations.GetString ("Click to select region of similar color.");
	public override Gdk.Cursor DefaultCursor => Gdk.Cursor.NewFromTexture (Resources.GetIcon ("Cursor.MagicWand.png"), 21, 10, null);
	public override int Priority => 19;
	public override bool IsSelectionTool => true;

	protected override void OnBuildToolBar (Gtk.Box tb)
	{
		base.OnBuildToolBar (tb);

		tb.Append (SelectionSeparator);

		workspace.SelectionHandler.BuildToolbar (tb, Settings);
	}


	protected override void OnMouseDown (Document document, ToolMouseEventArgs e)
	{
		combine_mode = workspace.SelectionHandler.DetermineCombineMode (e);

		base.OnMouseDown (document, e);

		document.Selection.Visible = true;
	}

	protected override void OnFillRegionComputed (Document document, IReadOnlyList<IReadOnlyList<PointI>> polygonSet)
	{
		var undoAction = new SelectionHistoryItem (workspace, Icon, Name);
		undoAction.TakeSnapshot ();

		document.PreviousSelection = document.Selection.Clone ();

		document.Selection.SelectionPolygons.Clear ();
		SelectionModeHandler.PerformSelectionMode (document, combine_mode, DocumentSelection.ConvertToPolygons (polygonSet));

		document.History.PushNewItem (undoAction);
		document.Workspace.Invalidate ();
	}

	protected override void OnSaveSettings (ISettingsService settings)
	{
		base.OnSaveSettings (settings);

		workspace.SelectionHandler.OnSaveSettings (settings);
	}

	private Separator? selection_sep;
	private Separator SelectionSeparator => selection_sep ??= GtkExtensions.CreateToolBarSeparator ();
}
